Selecting rows which are not null in sql

Question

Why doesn't the following code work in SQL

SELECT * 
FROM DATA
WHERE VALUE != NULL;

Answer 1

we can not Compare null value with = We Special operator to compare null value in sql IS OPERATOR

SELECT * 
FROM DATA
WHERE VALUE is not NULL;

Null is not any Value.Sql consider Null as Unknown/absence of data.

Answer 2

The condition you written is not in proper format. If you want to select not null values from your table then you can use the following command

select *from table name where column name IS NOT NULL